Synchronizing circuit for concentrator signaling system



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1. A SIGNALING SYSTEM INCLUDING A TRANSMITTING UNIT AND A RECEIVING UNIT, OSCILLATOR MEANS AT SAID UNITS, COUNTING MEANS AT SAID UNITS RESPONSIVE TO SAID OSCILLATOR MEANS, AND TIMING MEANS AT SAID RECEIVING UNIT RESPONSIVE TO A SIGNAL INDICATION FROM SAID TRANSMITTING UNIT FOR METERING A PREDETERMINED TIME INTERVAL AND APPARATUS CONTROLLED BY SAID TIMING MEANS FOR ENERGIZING SAID COUNTING MEANS AT SAID RECEIVING UNIT TO A PREDETERMINED COUNT INDICATIVE OF SAID TIME INTERVAL TO SYNCHRONIZE SAID COUNTING MEANS AT SAID UNITS. 